diff --git a/sdk/include/ndk/pstypes.h b/sdk/include/ndk/pstypes.h
index 55839aca37a..d10199097a3 100644
--- a/sdk/include/ndk/pstypes.h
+++ b/sdk/include/ndk/pstypes.h
@@ -910,12 +910,15 @@ typedef struct _PROCESS_SESSION_INFORMATION
 
 #endif
 
-typedef struct DECLSPEC_ALIGN(4) _PROCESS_PRIORITY_CLASS
+typedef struct _PROCESS_PRIORITY_CLASS
 {
     BOOLEAN Foreground;
     UCHAR PriorityClass;
 } PROCESS_PRIORITY_CLASS, *PPROCESS_PRIORITY_CLASS;
 
+// Compatibility with windows, see CORE-16757, CORE-17106, CORE-17247
+C_ASSERT(sizeof(PROCESS_PRIORITY_CLASS) == 2);
+
 typedef struct _PROCESS_FOREGROUND_BACKGROUND
 {
     BOOLEAN Foreground;